Clamping collar



Mar. 6, 1923. 1,447,253

, A. LA FON CLAMFING COLLAR Filed Mar. 10, 1920 INVENTOR By Attorneys,

Patented Mar. 6, 1923.

mimsonam' m ion; or swam, truism.

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Implication filed immh 1o, iz'o. serial so. 364,633.

Tdllwiimrtit'mmyccficmt Be it kiiow'nthait hlltrnonsn L-A' Felt, acitizen or the Unitedfita tes of Ame -m resid'iig in semen, in the" cannsf finddlsx and State of e'w'v JrQ", have invented cert, in new andusetu' 11m rovenrfits in C amping cans-rs, at was t the al asing asp'cillcatioh. V his invention rename clamping @01- rare for usa esfacts, and time to provide iq tzmveiiienrs therein. y

hefinesen't .i 'veiition 'iovides a clampi 00 at whim .iatoistrfietwa, wtch may he reset fpillufa dfilf'd, and which may be gfiimili andattaehed as rod, ma whi h y r en a reliable clamping co r in use".

or provides a cl' centre is durable, yespgnslf my er c miitioig; stat-Cloor use, where device is use i in conjunction with was ans structuresfor the in ufactur e conct'r'eteisltrucfil fs'. filer feature '0improvement will be hereinafter set Fort W An embodiment 0 the inventionis illustrated in the accompanying drawings.

In said drawings, v F re 1 s atop "IIi new of the clamp sh nag'plied toa I c q {.1 21s a cross section an the line 11-11, I

2 1g. 3 a view of are device in side elev on. v

efenring to and Jr; wmgs', numeral 10 designates the collar, havin arecess or opening 11 threthr or ne assag'e of :arqd he inner wa of salig a1 facing said recess has a portion 3 whi dh on ofms generally to thesize a s mess? t e rod with which theclam is to be u 0- site the portion13 0% the innrwyall ,0 t e collar there is an incl; w 1.41, saic wallbeing inclined in the direction of the axis of the said rod opening ,11.I

Numeral 1.7 designates a nut or the like, preferably a \cemmon nut, andmimeral t9 fa or the l' ad-apted to groject'fixemisaidnut kitocentaetwith the sideof amed through said rod opening in thecDlhits he firtlfiispreferably an ordinary screw-threaded bolt, which extends thuo'ugh theput 17, and through an opening 2-J preferably elongated ru nhi 4 thnoughto the outer side of the ietlllnm.

p vided with a bolt 18 is oonvenipntl it; of

holes 25 thereth'rough, through which a nail, or the like, may bepassed, and used as a lever forturning the bolt in the nut, and forcingthe bolt against the side of the rod. I1 the case of smaller sized rods,the parts 27 of the inner walls of the collar facing the opening 11,between the part 13 of the wall and the inclined part 14, are preferablyqr ied as somewhat diverging from the middle plane of the recess, sothat the recase or opening 11 is somewhat broadertoward the inclinedwall 14, thereby readily accommodating the nut. The side parts 27 of theinner wall, however, should be close enough to confine the nut 17 andprevent it fr turnin e inner wall of the collar, adjacent the bottom ofthe inclined wall it is preferably provided with a shoulder 28, whichacts to limit the downward movement of the nut, when the collar is notin place on the rod. A portion 29 of the collar, may limit the outwardmovement of the nut by coming in Contact with the bolt 19 thereon.

The bottom face of the collar is preferably provided with a flange 30which is adapted to increase the area with which the collar be rs aainst the part to be clamped.

hhe olt is preferably provided with a circular edge 40, at, its end,which is adapted to bite into the rod.

H The op ration and. use of the device is as follows; the collar isslipped over the end i of a 'od This rod may be a tie-rod connecting thetwo boards forming the sides of a mold in which concrete is being pouredto form a wall, orexample. The collar is slipped along the rod i1 til itcomes against the board to be clampe j and an implement or forcing thecollar a ainst the board to he clamped may he used i desired. If the endof the bolt ism contact with the rod, the collar is prevented fromslipping back on the rod by reason of the fact that the edge 40 bitesthe rod and causes the bolt 19 to rock toward the rod, pressing itagainst the inner face 13 of the collar, thebolt Being supported thr hthe nut, upon the inclined face 14 of the co lar. Preferably, the end ofthe bolt is made to project but slightly in from the fee of the nut, sothat the collar may be sipped upon the rod without requiring theexercise of any special care. As the end of the bolt comes in contactwith the rod, the nut an holt may slip slightly outward along theinclined ace 1a and thereby afiaw mm space for the collar to slip alongthe rod. After the collar is in place, the bolt may be caused to biteagainst the rod by screwing the bolt 19 in the nut 17 until it'pressesthe rod X iirmly against the inner face portion 13. The rod cannot thenslip, owing to the fact that any movement of the collar on the rodcauses the end of the bolt 19 to be pressed with greater force into andagainst the rod X.

In case the screw-threads on the bolt rust, or become stripped, a newbolt may be inserted, the remaining parts being usable. If the threadsupon the nut become stripped or worn, the nut may be replaced withouthaving to renew either the bolt or the collar.

The inventive ideas herein set forth may receive other embodiments ormechanical expressions than that herein specifically illustrated anddescribed.

What I claim is:

1. A clamping collar for use on rods, said collar having an openingrunning therethrough for the passage of a rod, and a face inclined tothe axis of said rod opening, a nut adapted to bear/against saidinclined face, and a bolt projecting from said nut at an incline to arod in said opening which it is adapted to bite.

2. A clamping collar for use on rods, said collar having an openingrunning therethrough for the passa e of a rod, and a face inclined tothe axiso said rod opening. a nut adapted to bear against said inclinedface. and a bolt projecting from said nut at an incline to a rod in saidopening which it is adapted to bite, said bolt and nut havinginterengaging screw-threads whereby the said bolt may be advanced andtightened against said rod.

3. A clamping collar for use on reels, said collar having an openingrunning therethrough for the passage of a rod, and a face inclined tothe axis of said rod opening, a nut adapted to bear against saidinclined face, and a bolt projectin from said nut at an incline to a rodin sai opening which it is adapted to bite, said bolt extending throughsaid nut and through said. collar, said bolt and nut havinginterengaging screw-threads, and said collar having an opening throughone side for the passage of said bolt.

4. A clamping collar for use on rods, said collar having an openingrunning therethrough for the passage of a rod, and a face inclined tothe axis of said rod opening, a nut adapted to bear against saidinclined face, and a bolt projecting from said nut at an incline toa rodin said opening which it is adapted to bite, said collar having ashoulder at the bottom of said inclined face for limiting the movementalong said face of said nut.

5. A clamping collar for use on rods, said collar haying an openingrunning therethrough for the passage of a rod, and a face inclined tothe axis of said rod opening, a nut adapted to bear against saidinclined face, and a bolt projecting from said nut at an incline to arod in said opening which it is adapted to bite, said bolt extendingthrough said nut and through said collar, said bolt and nut havingintercngaging screw-threads, and said collar having an opening throughone side for the passage of said bolt, said opening being elongated toadmit of movement of said nut along said inclined face.

6. A clamping collar for use on rods, said collar having an openinrunning there through for the passage 0 a rod, and a face inclined tothe axis of said rod opening, a nut ada ited to bear against saidinclined face, an a bolt projecting from said nut at an incline to a rodin said opening which it is adapted to bite, the inclination of saidbolt being toward the bearin face of said collar.

7. A clamping collar %or use on rods, said collar having a base adaptedto bear a ainst a concrete form and an opening therethrough for thepassage of a rod, and a' fastening piece having a bearing on said collarand being adapted to make a contact with a rod in said opening, saidfastening piece and bearing being so arranged that a 'pull on said rodwill cause said clamping piece to swing on its bearing toward said rodto press it against said collar, said bearing on said collar being soformed as to permit said has toning means to rock thereon.

S. A clampin collar for use on rods, said collar having a iiase adaptedto bear against a concrete form and an opening" the ethrough for thepassage o'fa rod, and a fastening piece having a bearing on said collarand adapted to make contact with a rod in said opening, said fasteningpiece andbearingl being so arranged that a pull on said ro will causesaidclamping piece to swing on its bearing toward said rod to press itagainst said collar, said bearing on said collar being so formed as topermit said fastening means to rock thereon, said fastening piece havina sharp edge adapted to bite into said rod.

9. A clamping collar for use on rods, said collar having a base adaptedto bear against a concrete form and an opening 7 therethrough for thepassage of a rod, and a fastening' piece having a bearing on said collarand adapted to make contact with a rod in said opening, said fasteningpiece and bearing being so arranged that a pull on said rod will causesaid clamping piece to swing on its bearing toward said rod to press itagainst said collar. said bearing on said collar being so formed as topermit said fastening'means to rock thereon, the fastening piece havinga tool engaging portion by which it may be forced against a rod.

10. A clamping collar for use on rods, said collar having a base adaptedto bear against a concrete form and an opening therethrough for thepassage of a rod, and a fastening piece having a bearing on said collarand adapted to make contact with a rod in said opening, said fasteningpiece and hearing being so arranged that a pull on said rod will causesaid clamping piece to swing on its bearing toward said rod to press itagainst said collar. said bearing on said collar being so formed as topermit said fastening means to rock thereon. said fastening piece havinga sharp edge adapted to bite into said rod, said fastening piece havinga tool engaging portion by which it may be forced against a rod.

11. A clamping collar for use on rods, said collar having an openingtherethrough for the passage of a rod and a fastening piece having abearing on said collar and on a rod in said opening. said fasteningpiece and bearing being so arranged that a pull on said rod will causesaid clamping piece to move toward said rod to press it against saidcollar, said fastening piece comprising a bolt bearing against said rodhaving a shoulder bearing on said collar.

12. A clamping collar for use on rods, said collar having an openingtherethrough for the passage of a rod, and a fastening piece having abearing on said collar and on a rod in said opening, said fasteningpiece and bearing being so arranged that a pull on said rod will causesaid clamping piece to move toward said rod to press it against saidcollar, said fastening piece comprising a bolt bearing against said rodand having a shoulder bearing on said collar, said shoulder be ing a nutin which said bolt is threaded.

13. A clamping collar for use on rods, said collar having an openingtherethrough for the passage of a rod, and a fastening piece having abearing on said collar and on a rod in said opening said fastening pieceand bearing being so arranged that a pull on said. rod will cause saidclamping piece to move toward said rod to press it against said collar,said fastening piece comprising a bolt bearing against said rod andhaving a shoulder bearing on said collar, said collar having an inclinedshoulder against which said bolt shoulder bears.

14. A clamping collar for use on rods, said collar having an openingtherethrough for the passage of a rod, and a fastening piece having abearing on said collar and on a rod in said opening, said fasteningpiece and bearing being so arranged that a pull on said rod will causesaid clamping piece to move toward said rod to press it against saidcollar, said fastening piece comprising a bolt bearing against said rodand having a shoulder bearing on said collar, said collar having aninclined shoulder against which said bolt shoulder bears, said collarshoulder being inclined toward the bearing face of said collar, wherebythe inclination of said bolt is away from said bearing face.

In witness whereof, I have hereunto signed my name.

ALPHONSE LA FON.

